Hello,

This takes on the primary color set up for theme. If you want to change this color everywhere you see it, then it’s best to change the primary color itself. Find it in Appearance > Customize > Styling > Primary Color.

If you only want to change this element but keep the current primary color, then add this cs:

.tool .tool-link .cart-total{
    background-color: #eb5a46 !important;
    color:white !important;
}

Edit the colors to your wish.

Best regards!